Chevrolet Silverado / GMC Sierra. Service manual — part 476

Fig. 213: View Of J 26999-20 & J 26999
Courtesy of GENERAL MOTORS CORP.

9. Release the compressed air holding the valves in place.

10. Remove J 26999-20 (1) from the glow plug hole.

11. Continue to replace the valve stem seals on the remaining cylinders using the above

procedures.

12. Install the glow plug. Refer to Glow Plug Replacement - Bank 1 or Glow Plug

Replacement - Bank 2 .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

13. Install the valve rocker arm shaft, the valve bridges, and the push rods. Refer to Valve

Rocker Arm, Shaft, and Push Rod Replacement.

14. Install the upper and lower fan shroud. Refer to Engine Coolant Fan Lower Shroud

Replacement (Mechanical) and Engine Coolant Fan Upper Shroud Replacement
(Mechanical) or Engine Coolant Fan Upper Shroud Replacement (Automatic
Transmission - Diesel) .

VALVE LIFTER REPLACEMENT

Removal Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 214: View Of Valve Lifter, Guides, Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the cylinder head. Refer to Cylinder Head Replacement - Left Side or Cylinder

Head Replacement - Right Side.

2. Loosen the valve lifter guide retainer bolts.

3. Remove the valve lifter guide retainers.

4. Remove the valve lifter guides.

5. Remove the valve lifters.

6. If required, clean and inspect the lifters. Refer to Valve Lifters Cleaning and Inspection .

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 215: View Of Valve Lifter, Guides, Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Apply clean engine oil to the roller and outside of the valve lifter.

2. Install the valve lifter.

3. Install the valve lifter guides.

4. Install the valve lifter guide retainer.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado